I am using DB2 to generate the Identity as in the DDL:
ID BIGINT NOT NULL GENERATED BY DEFAULT AS IDENTITY (START WITH 1, INCREMENT
BY 1)
And in code for the base class:
@MappedSuperclass
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public abstract class Base {
.....
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "ID")
private long someID;
.....}
Will this not use a unique ID generator per derived class? Is there a better
way of doing it in DB2? Thanks for the help.
Majeed Arni
Abe White wrote:
>
> Are the two types related by inheritance? If two classes in an
> inheritance hierarchy use the same id class, then every instance of
> both classes must have a distinct id value. If you want instances in
> inheritance-related classes to be able to have the same id values,
> then you must use different id classes for different classes in the
> inheritance hierarchy.
>
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